Coax and power

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 Question by Michael Oak posted 13 Dec 2002
 Coax and power
I have coax and 12VDC running into a large gang box. The coax is run in it's own conduit and the 12VDC is run in it's own conduit. They just meet in this large gang box. Will the 12VDC affect the video signal? The 12VDC is the power for a card reader.
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 Answer by Dmitri Abaimov posted 16 Dec 2002
Dear Michael,

DC won't affect anything being Direct Current (ideally - zero frequency. Really - 60Hz, depends on the load). There could be a little chance on EMI in the moment of switching the load, which probably happens like once a year for a card reader.

I don't see any potential problem here.

Sincerely,
Dmitri Abaimov, RCDD

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